期刊
JOURNAL OF MATERIALS SCIENCE
卷 43, 期 10, 页码 3612-3617出版社
SPRINGER
DOI: 10.1007/s10853-008-2575-4
关键词
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The microstructure of directionally solidified Rene 80 ( DS Rene 80) superalloy in the standard solution heat treated condition was examined. Sub- solidus incipient melting was observed, which was found to be caused by the liquation of terminal solidification reaction products present in front of the gamma - gamma' eutectic in the as- cast alloy. Based on the differential scanning calorimetry ( DSC) measurements, and microstructural examination of heat- treated and water- quenched specimens, sub- solidus incipient melting in the alloy is likely to occur below 1,160 degrees C, and this is a key factor to be considered in the development of a suitable solution heat treatment scheme for DS Rene 80.
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